Embodiments of the present invention disclose a pen-based computing system and method using multiple input areas. A library comprising Jones andor Mueller matrices andor components and corresponding profile parameters is generated using ray tracing and a selected range of beam propagation parameters and can be used to train a machine learning system. An isolation electrode is positioned in the first groove. A formatting module formats a media representation generated by the system. The FZLC has two inputs: the output error ert and the rate of change of the output quality characteristic dyt. The conductive member and the conducting portion are connected.